Question 1

A client diagnosed with major depressive disorder asks,"What part of my brain controls my emotions?" Which nursing response is appropriate?

Accepted Answer

Rationale: The nurse should explain to the client that the limbic system is largely responsible for one's emotional state.This system if often called the "emotional brain" and is associated with feelings,sexuality,and social behavior.The occipital lobes are the area of visual reception and interpretation.Somatosensory input (touch,taste,temperature,etc.)occurs in the parietal lobes.The medulla contains vital centers that regulate heart rate and reflexes.

Question 2

A nurse understands that the abnormal secretion of growth hormone may play a role in which illness?

Accepted Answer

Rationale: The nurse should understand that research has found a correlation between abnormal levels of growth hormone and anorexia nervosa.The growth hormone is responsible for growth in children,as well as continued protein synthesis throughout life.

Question 3

Six months after her husband and children were killed in a car accident,a client is diagnosed with ulcerative colitis.The nurse should recognize that this situation validates which study perspective?

Accepted Answer

Rationale: Psychoimmunology is the branch of medicine that studies the effects of social and psychological factors on the functioning of the immune system.Studies of the biological response to stress hypothesize that individuals become more susceptible to physical illness following exposure to stressful stimuli.

Question 4

____________________________ is the study of the biological foundations of cognitive,emotional,and behavioral processes.

Accepted Answer

Rationale: Psychobiology is the study of the biological foundations of cognitive,emotional,and behavioral processes.In recent years,a greater emphasis has been placed on the study of the organic basis for psychiatric illness.

Question 5

A client is admitted to an emergency department experiencing memory deficits and decreased motor function.What alteration in brain chemistry should a nurse correlate with the production of these symptoms?

Accepted Answer

Rationale: The nurse should correlate memory deficits and decreased motor function with decreased levels of acetylcholine.Acetylcholine is a major effector chemical of the autonomic nervous system.Functions of acetylcholine include sleep regulation,pain perception,the modulation and coordination of movement,and memory.

Question 6

An instructor is teaching nursing students about neurotransmitters.Which best explains the process of how neurotransmitters released into the synaptic cleft may return to the presynaptic neuron?

Accepted Answer

Rationale: The nursing instructor should explain that the process by which neurotransmitters are released into the synaptic cleft and returned to the presynaptic neuron is termed reuptake.Reuptake is the process by which neurotransmitters are stored for reuse.

Question 7

Which cerebral structure should a nursing instructor describe to students as the "emotional brain"?

Accepted Answer

Rationale: The limbic system is often referred to as the "emotional brain." The limbic system is largely responsible for one's emotional state and is associated with feelings,sexuality,and social behavior.

Question 8

A nurse concludes that a restless,agitated client is manifesting a fight- or-flight response.The nurse should associate this response with which neurotransmitter?

Accepted Answer

Rationale: The nurse should associate the neurotransmitter norepinephrine with the fight-or-flight response.Norepinephrine produces activity in the sympathetic postsynaptic nerve terminal and is associated with the regulation of mood,cognition,perception,locomotion,and sleep and arousal.

Question 9

Which of the following symptoms should a nurse associate with the development of increased levels of thyroid-stimulating hormone (TSH)in a newly admitted client? (Select all that apply.)

Accepted Answer

Rationale: The nurse should associate depression and fatigue with increased levels of TSH.TSH is only increased when thyroid levels are low,as in the diagnosis of hypothyroidism.In addition to depression and fatigue,other symptoms,such as decreased libido,memory impairment,and suicidal ideation are associated with chronic hypothyroidism.

Question 10

Which of the following information should a nurse include when explaining causes of anorexia nervosa to a client? (Select all that apply.)

Accepted Answer

Rationale: The nurse should explain to the client that there is a possible correlation between anorexia nervosa and decreased levels of growth hormones and gonadotropin.Anorexia nervosa has also been correlated with increased cortisol levels.

Question 11

A nurse should recognize that a decrease in norepinephrine levels would play a significant role in which mental illness?

Accepted Answer

Rationale: The nurse should recognize that a decrease in norepinephrine level would play a significant role in the development of major depressive disorder.The functions of norepinephrine include the regulation of mood,cognition,perception,locomotion,cardiovascular functioning,and sleep and arousal.

Question 12

A withdrawn client,diagnosed with schizophrenia,expresses little emotion and refuses to attend group therapy.What altered component of the nervous system should a nurse recognize as being responsible for this behavior?

Accepted Answer

Rationale: The nurse should recognize that neurotransmitters play an essential function in the role of human emotion and behavior.Neurotransmitters are targeted and affected by many psychotropic medications.

Question 13

A nurse should expect that an increase in dopamine activity might play a significant role in the development of which mental illness?

Accepted Answer

Rationale: The nurse should expect that an increase in dopamine activity might play a significant role in the development of schizophrenia spectrum disorder.Functions of dopamine include regulation of emotions,coordination,and voluntary decision-making ability.Increased dopamine activity is also associated with mania.

Question 14

A depressed client states,"I have a chemical imbalance in my brain.I have no control over my behavior.Medications are my only hope to feel normal again." Which nursing response is appropriate?

Accepted Answer

Rationale: The nurse should advise the client that medications address biological factors,but there are other factors that affect mood.The nurse should educate the client on environmental and interpersonal factors that can lead to depression.

Question 15

Which part of the nervous system should a nurse identify as playing a major role during stressful situations?

Accepted Answer

Rationale: The nurse should identify that the sympathetic nervous system plays a major role during stressful situations.The sympathetic nervous system prepares the body for the fight-or-flight response.The parasympathetic nervous system is dominant when an individual is in a nonstressful state.

Question 16

Which client statement reflects an understanding of circadian rhythms in psychopathology?

Accepted Answer

Rationale: By stating,"I am a morning person," the client demonstrates an understanding that circadian rhythms may influence a variety of regulatory functions,including the sleep-wake cycle,regulation of body temperature,and patterns of activity.Most humans follow a 24-hour cycle that is largely affected by lightness and darkness.

Question 17

A client is admitted to a psychiatric unit with the diagnosis of catatonic schizophrenia.Which of the client's neurotransmitters should a nurse expect to be elevated?

Accepted Answer

Rationale: The nurse should expect that elevated dopamine levels might be an attributing factor to the client's current level of functioning.Dopamine functions include regulation of movements and coordination,emotions,and voluntary decision-making ability.

Question 18

A client's wife of 34 years dies unexpectedly.The client cries often and becomes socially isolated.The client's therapist encourages open discussion of feelings,proper nutrition,and exercise.What is the best rationale for the therapist's recommendations?

Accepted Answer

The therapist's recommendations should be based on the knowledge that the client has been exposed to stressful stimuli and is at an increased risk to develop illness because of the effects of stress on the immune system.The study of this branch of medicine is called psychoimmunology.

Question 19

Which types of adoption studies should a nurse recognize as providing useful information for the psychiatric community?

Accepted Answer

Rationale: The nurse should determine that all of the studies could possibly benefit the psychiatric community.The studies may reveal research findings relating genetic links to mental illness.Adoption studies allow comparisons to be made of the influences of the environment versus genetics.

Question 20

Which mental illness should a nurse identify as being associated with a decrease in prolactin hormone level?

Accepted Answer

Rationale: Although the exact mechanism is unknown,there may be some correlation between decreased levels of the hormone prolactin and schizophrenia.

Quiz 3: Biological Implications